Zosankha Zinayi Zodziwika Kwambiri za Rotary Shaft Zisindikizo Zazida ndi Momwe Zimafananizira

Kusintha kwa Zida Zosindikizira

Kusinthika kwa zida zosindikizira kudasinthika pomwe zisindikizo zimakumana ndi zovuta zambiri.Zofunikira zoyambirira zitha kukwaniritsidwa pogwiritsa ntchito hemp yodzaza kapena zikopa, koma pomwe zofunikira zidayamba kufunidwa zida zatsopano.Izi zidapangitsa kuti pakhale zosindikizira zachilengedwe za rabara, zomwe zidasintha kukhala ma elastomers opangira, ndipo pamapeto pake ma polima opangidwa ngati PTFE (Polytetrafluoroethylene).

Zina mwazinthu zamakono zomwe mungasankhe pamilomo yozungulira shaft seal ndi mphira wa nitrile, polyacrylate, FKM, ndi PTFE.Mwa zida izi, atatu ndi elastomers - mphira nitrile, mphira polyacrylate ndi FKM - ndipo chimodzi chokha ndi polima - PTFE.Tiyeni tiwone momwe zidazi zimasungidwira.

Zida 1: Mpira wa Nitrile

Nitrile rabara imapita ndi mayina angapo, kuphatikiza rabala acrylonitrile butadiene, Buna-N, ndi NBR.Kwenikweni ndi elastomer yopangira labala yomwe imalimbana kwambiri ndi mankhwala ena ofunikira monga mafuta, mafuta, ndi mafuta.Poyerekeza ndi ma elastomer ena, imagwira ntchito yabwino kwambiri yolimbana ndi kuwonongeka komanso kukhudzidwa ndi dzuwa ndi nyengo.Ili ndi malire, komabe.

Zida 2: Mpira wa Polyacrylate

Polyacrylate amatanthauza mphira wa polyacrylate ndipo nthawi zina amatchedwa ACM.Imapereka kukana kwabwinoko kutentha ndipo imagwirizana ndi kuthamanga kwa shaft kuposa mphira wa nitrile.Ndizabwinonso pazantchito zina zapadera monga mafuta opaka sulfure.Mphamvu zake zocheperako komanso kukana kwamadzi ndizo zomwe zimalepheretsa.

Zida 3: FKM (Fluoroelastomers)

Nachi chochititsa chidwi: anthu nthawi zambiri amasokonezeka ponena za kusiyana kwa FKM, FPM, ndi Viton.Onse akutanthauza zinthu zoyambira zomwezo.Dzina lakuti FKM limachokera ku ASTM m'magulu a flouroelastomers, pamene FPM ndi chidule cha DIN/ISO.Viton ndi dzina lake lamalonda, la DuPont.Katundu wa FKM ndi wapamwamba kwambiri kuposa mphira wa nitrile kapena mphira wa polyacrylate, potengera kutentha ndi liwiro la shaft, komanso kukana mankhwala.Ndiwokwera mtengo kwambiri mwa ma elastomer atatu omwe takambirana mpaka pano.

Zida 4: PTFE (Polytetrafluoroethylene)

PTFE imadziwika bwino ndi dzina lake lamalonda, polima (yomwenso ndi ya DuPont).PTFE imaposa kwambiri mphira wa nitrile, labala la polyacrylate, ndi FKM malinga ndi liwiro la shaft, kutentha, ndi kukana mankhwala.M'malo mwake, is ili ndi mphamvu yabwino kwambiri yolimbana ndi polima kapena elastomer iliyonse komanso kugunda kotsika kwambiri.

Mapeto

Tchati chomwe chili m'munsichi chikuwonetsa momwe zida zinayi zosindikizira zomwe zimagwiritsidwa ntchito nthawi zambiri zimalumikizana wina ndi mnzake malinga ndi malire awo othamanga.PTFE imawala kuposa ena onse, ngakhale pa liwiro la shaft lopitilira 30,000 rpm.Mukamasankha chisindikizo chomwe chiyenera kupulumuka pamalo owononga komanso ovuta pa liwiro lokwera, musayang'anenso PTFE.